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Proceedings Paper

Passive mm-wave imager using HTS Josephson junction detectors
Author(s): Richard Humphreys; Phil Hirst; Ryan Heath; Dave Elliner; Nick Parker; Mark A. G. Smith
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Paper Abstract

Passive mm-wave imaging has great potential for all-weather flying aids and security applications. To achieve useful real time images of an ambient temperature scene, >100 detectors are required, and uptake of the technology has been limited by the high cost of detectors. We propose a novel, cost effective solution using integrated arrays of antenna-coupled HTS Josephson junction video detectors. Arrays of 16 antenna coupled YBa2Cu3O7 interface engineered junctions have been fabricated with a design centre frequency of ~100GHz, optically immersed behind a single lens. Detector characteristics have been compared to stochastic RCSJ model simulations, with the antenna represented by an equivalent circuit. A real time demonstration imager has been built, and the first images obtained.

Paper Details

Date Published: 8 December 2004
PDF: 11 pages
Proc. SPIE 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology, (8 December 2004); doi: 10.1117/12.578531
Show Author Affiliations
Richard Humphreys, QinetiQ (United Kingdom)
Phil Hirst, QinetiQ (United Kingdom)
Ryan Heath, QinetiQ (United Kingdom)
Dave Elliner, QinetiQ (United Kingdom)
Nick Parker, QinetiQ (United Kingdom)
Mark A. G. Smith, QinetiQ (United Kingdom)

Published in SPIE Proceedings Vol. 5619:
Passive Millimetre-Wave and Terahertz Imaging and Technology
Roger Appleby; J. Martyn Chamberlain; Keith A. Krapels, Editor(s)

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